128519580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305999}}^1$

素因数の和:306018

約数の個数: 48

約数和(自身を含む): 411264000

約数和(自身を除く): 282744420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 305999, 611998, 917997, 1223996, 1529995, 1835994, 2141993, 3059990, 3671988, 4283986, 4589985, 6119980, 6425979, 8567972, 9179970, 10709965, 12851958, 18359940, 21419930, 25703916, 32129895, 42839860, 64259790, 128519580]

約数ペア:

[(1, 128519580), (2, 64259790), (3, 42839860), (4, 32129895), (5, 25703916), (6, 21419930), (7, 18359940), (10, 12851958), (12, 10709965), (14, 9179970), (15, 8567972), (20, 6425979), (21, 6119980), (28, 4589985), (30, 4283986), (35, 3671988), (42, 3059990), (60, 2141993), (70, 1835994), (84, 1529995), (105, 1223996), (140, 917997), (210, 611998), (420, 305999)]